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Midterm Review Part I – Definitions Name ________________________________ Date _______________ Period ___________ Metric Unit Directions: Complete the following chart. Measurement Mass Unit Abbreviation for unit Measurement Device Volume Length Temperature Directions: Determine the equation and unit for the following items. 1. Area = 2. Volume = 3. Density = 4. Percent = Matter Unit Define the following terms related to matter. 1. Physical Change – 2. Chemical Change – 3. Evaporation – 4. Melting – 5. Sublimation – 6. Element – 1 7. Compound 8. Homogenous Mixture – 9. Heterogeneous Mixture – Directions: Complete the following tables. State Shape (Definite or Indefinite) Volume (Definite or Indefinite) Solid Liquid Gas Separation Technique Definition Type of Mixture to Separate Example Distillation Crystallization Evaporation Chromatography Magnetic Method Filtration Solutions Unit Directions: Define the following terms related to solutions. a. Solute b. Solvent c. Dilute 2 d. Concentrated e. Miscible f. Immiscible Directions: Complete the following problems. a. What is the concentration of a solution with 10 g of salt dissolved in 40 g of water? b. What is the concentration of a solution with 10 g of salt dissolved in 40 g of solution? c. Explain in your own words how you would complete a 1-to-5 dilution of food coloring. Water Unit 1. Define the following terms related to water treatment and wastewater treatment. a. Water Treatment Plant b. Wastewater Treatment Plant c. Aquifer d. Aquitard e. Point Source f. Area Source g. Primary Treatment h. Secondary Treatment 3 Directions: Complete the following table Additive Water Treatment or Wastewater Treatment (both?) Purpose Chlorine Fluorine Alum Microorganisms Directions: Label the following diagram Word Bank Evaporation Precipitation Ground water Transpiration Runoff Condensation Surface water 4 Midterm Review – Part II Practice Problems Metric Unit 1) 2) Complete the following metric conversions. a. 2.6 kg = ________________ g d. 0.45 daL = ________________ hL b. 5.0 g = ________________ mg e. 0.009 km = ________________ dm c. 32 mL = ________________ L f. 1.04 m = ________________ cm Complete the following problems. Show all work and include units. a. Calculate the density of a substance with a mass of 2.5 g and a volume of 15 mL. b. My closet has 3 pairs of black shoes out of a total of 20 pairs of shoes. What is the percentage of black shoes in my closet? Matter Unit 3) 4) Classify each of the following as a physical (P) or chemical (C) change. a. Cutting Magnesium __________ b. Lead nitrate plus potassium iodide forms a yellow solid __________ c. Melting lauric acid __________ d. Grinding CuSO4 ∙ 5H2O __________ e. Magnesium plus hydrochloric acid produces heat plus many bubbles. __________ Answer the following questions regarding 2Mg3(PO4)2 a. Element or Compound ________________ b. Formula or Symbol _______________ e. Number of P atoms ________________ f. Number of O atom ________________ g. Total number of atoms ________________ c. What is the coefficient? ________________ d. Number of Mg atoms ________________ 5 Solutions Unit 5) Complete the following concentration problems. a. What is the concentration of a solution with 20 g of sugar dissolved in 80 g of solution? b. What is the concentration of a solution with 20 g of sugar dissolved in 80 g of water? c. Salt is dissolved in water. Salt would be called the ___________ and water is called the _______________. Water Unit 6) Describe the process in which rain water seeps into the ground. Use the following words in your discussion: pores, seepage, aquifer, aquitard. 7) Complete the following chart: Material Pore size (small, medium, large) Aquifer or Aquitard Sand Gravel Clay 8) A gas station has a leak in an underground tank. The soil around the tank becomes contaminated. Is this an example of an area source or point source of pollution? Explain your answer. 6